.header {
    min-width: 320px;
    min-height: 56px;
    border-bottom: 1px solid rgba(84, 84, 84, 0.7);
    margin: 28px auto 38px;
}

@media (min-width: 1024px) {
    .header {
        min-width: 880px;
        min-height: 74px;
        margin: 45px auto 40px;
    }
}